Topics created by Chris25

@Phaedrux and @o_lampe

Thank you for your answers.

It is direct air heating.

I updated the firmware to 3.2. It was like you said, I had to upload a new config after the update, but no problem.

The PID Tunning is now much more patient, but unfortunately it was still not enough.
I then heated up the 2kw air heater together with the heating bed 750W that then worked. 😉

And your idea of ​​updating also solved another problem:
https://forum.duet3d.com/topic/20444/pwm-fan-noctua-nf-a14-duet2/5

The M950 command was only inserted with firmware 3 and thus led to malfunctions in the fans.

Big thank you 👏

Phaedrux unintentionally solved the problem by recommending an update to 3.2.

The problem was that I had installed an old firmware version 2.03. But I worked with the M950 command in my config.g file.
The M950 was only added with firmware 3. This led to the malfunctioning of the fan.